Apparatus for extracting minerals through a borehole
AssigneeStamicarbon B.V.
InventorWouter Van Eek, deceased
Life of this patent
Estimating the term…
Abstract
An apparatus consisting of pipe sections pivotally joined which can be insert in a borehole when in straight position and manipulated to a zigzag position to loosen minerals outside the wall of the borehole.
Claims12
Apparatus for extracting minerals through a bore hole comprising a sleeve which is provided with one or more longitudinal slots and a chain of pivotally connected sections, one of the outer ends of said chain being pivotally connected to said sleeve, the other outer end of said chain being pivotally connected to an element that can move along the axis of said sleeve, said chain of sections being fastened in each pivot joint between two sections to means capable of loosening the mineral outside the wall of the bore hole and said chain of sections also being fastened in the middle of each section except the first and last section to means which allow a rotation in the plane of the longitudinal slots and an axial movement of the sections along two opposite longitudinal grooves in the sleeve wherein said chain of sections, when in straight position, is within the sleeve and, when in folded state, projects outwardly through the longitudinal slots in the sleeve, said sleeve being connected to a pipe string by means capable of reciprocating the sleeve in the direction of its longitudinal axis, relative to the pipe string, while the pipe string rests in a stationary position.
Apparatus for extracting minerals through a bore hole comprising a sleeve which is provided with one longitudinal slot and two pivotally connected sections, the outer end of one section being pivotally connected to said sleeve, the outer end of the other section being pivotally connected to an element that can move along the axis of said sleeve, said sections being fastened in the pivot joint between the two sections to means capable of loosening the mineral outside the wall of the borehole, wherein said sections, when in straight position, are within the sleeve and, when in folded state, project outwardly through the longitudinal slots in the sleeve, said sleeve being connected to a pipe string by means capable of reciprocating the sleeve in the direction of its longitudinal axis, relative to the pipe string, while the pipe string rests in a stationary position.
Dependencies are inferred from the claim text.